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Round|Lab Grown|IGI

1.75ct G SI1 Round Lab Grown Diamond

ID • G/SI1 • IGI LG770643677

Shape and cutting style on the report: Round brilliant

Certificate IGI LG770643677

Diamond specifications and retailer prices

From £165 GBP
$221 USD
As of November 1, 2026
Save £653 GBP (80%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £818 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.75ct lab-grown round diamond

This 1.75ct lab-grown round sits in the one-and-a-half to two carat band, graded G colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG770643677 or 770643677. Listed at 18 retailers as of November 1, 2026, with prices from £165 to £818, a £653 spread on the same certified stone. MOH London lists it at £818. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.75
Carat
G
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.5°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG770643677
Dimensions7.74 × 7.68 × 4.79 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.74 mm7.68 mm1.75 ctG / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG770643677
Side View
Table 56.0%Crown 35.5°Girdle: MediumPavilion 40.7°Culet: NoneDepth 62.2%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £818 GBP|Low: £164 GBP|High: £857 GBP|Avg: £453 GBP|-4.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
November 3, 2026
Retailer 12£165 GBP
Retailer 6£191 GBP
Retailer 5£204 GBP
Retailer 9£343 GBP
Retailer 3£349 GBP
Retailer 8£363 GBP
Retailer 2£376 GBP
Retailer 13£400 GBP
Retailer 14£440 GBP
Retailer 11£535 GBP
Retailer 10£619 GBP
Retailer 4£656 GBP
Retailer 7£695 GBP
Retailer 15£768 GBP
MOH London£818 GBP

39 data points across 15 retailers

18 retailers£165 GBP to £818 GBP

A
Cheapest Retailer
-
£165 GBP
$221 USD
A
Retailer 2
-
£191 GBP
$256 USD
View
A
Retailer 3
-
£204 GBP
$274 USD
View
Retailer 4
-
£212 GBP
$284 USD
View
Price last confirmed 8 days ago
A
Retailer 5
-
£343 GBP
€439 EUR
View
B+
Retailer 6
-
£349 GBP
$468 USD
View
A
Retailer 7
-
£363 GBP
View
A
Retailer 8
-
£376 GBP
View
A
Retailer 9
-
£400 GBP
$537 USD
View
B+
Retailer 10
-
£440 GBP
$590 USD
View
B+
Retailer 11
-
£535 GBP
$718 USD
View
B+
Retailer 12
-
£619 GBP
$830 USD
View
Retailer 13
-
£620 GBP
$832 USD
View
Price last confirmed 48 days ago
B
Retailer 14
-
£656 GBP
$880 USD
View
B
Retailer 15
-
£695 GBP
$933 USD
View
B
Retailer 16
-
£768 GBP
$1,030 USD
View
B
Retailer 17
-
£768 GBP
$1,030 USD
View
Most Expensive
B
MOH London
LG770643677 · Nov 2
£818 GBP
View
17 more retailers have this diamond
Prices start from £165 GBPSave up to £653 GBP

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.75ct Round
£165 GBP